How is the rate of change of each reactant and product in a balanced reaction related to one another? The rate of change in concentration of each species is equal to each other. The rate of change in concentration of each species is divided by the coefficient of that species in the balanced reaction. The rate of change in concentration of each species is multiplied by the coefficient of that species in the balanced reaction. The rate of change in concentration of each species is multiplied by the rate constant \\( k \\)